Designation:C294−12StandardDescriptiveNomenclatureforConstituentsofConcreteAggregates1ThisstandardisissuedunderthefixeddesignationC294;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisdescriptivenomenclatureprovidesbriefdescrip-tionsofsomeofthemorecommonlyoccurring,ormoreimportant,naturalandartificialmaterialsofwhichmineralaggregatesarecomposed.Thedescriptionsprovideabasisforunderstandingthesetermsasappliedtoconcreteaggregates.Whenappropriate,briefobservationsregardingthepotentialeffectsofusingthenaturalandartificialmaterialsinconcretearediscussed.NOTE1—Thesedescriptionscharacterizemineralsandrocksastheyoccurinnatureandblast-furnaceslagorlightweightaggregatesthatarepreparedbythealterationofthestructureandcompositionofnaturalmaterial.InformationaboutlightweightaggregatesisgiveninSpecifica-tionsC330,C331,andC332.1.2Thisstandarddoesnotincludedescriptionsofconstitu-entsofaggregatesusedinradiationshieldingconcrete.SeeDescriptiveNomenclatureC638.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2C125TerminologyRelatingtoConcreteandConcreteAg-gregatesC227TestMethodforPotentialAlkaliReactivityofCement-AggregateCombinations(Mortar-BarMethod)C289TestMethodforPotentialAlkali-SilicaReactivityofAggregates(ChemicalMethod)C330SpecificationforLightweightAggregatesforStruc-turalConcreteC331SpecificationforLightweightAggregatesforConcreteMasonryUnitsC332SpecificationforLightweightAggregatesforInsulat-ingConcreteC638DescriptiveNomenclatureofConstituentsofAggre-gatesforRadiation-ShieldingConcrete3.Terminology3.1Fordefinitionsoftermsinthisstandard,refertoTerminologyC125.4.SignificanceandUse4.1Thisdescriptiv...
